| |
| Web URL(s): | https://www.dl.sciencesocieties.org/publications/cs/articles/42/3/905
Last checked: 05/05/2017
Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/3/905
Last checked: 05/05/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Floyd, Donald J.;
Barker, Reed E. |
|---|
| Author Affiliation: | Floyd: Pickseed West, Inc., Albany, Oregon; Barker: USDA-ARS National Forage Seed Production Research Center, Corvallis, Oregon |
|---|
| Title: | Change of ryegrass seedling root fluorescence expression during three generations of seed increase |
|---|
| Section: | Forage and grazing lands
Other records with the "Forage and grazing lands" Section
|
|---|
| Source: | Crop Science. Vol. 42, No. 3, May/June 2002, p. 905-911. |
|---|
| Publishing Information: | Madison, WI: Crop Science Society of America |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Lolium multiflorum; Lolium perenne; Seedlings; Roots; Fluorescence test; Seeds; Species identification; Variations
|
|---|
| Abstract/Contents: | "Seedling root fluorescence (SRF) has been used since the early 1940s to discriminate Italian (annual) ryegrass (Lolium multiflorum Lam.) from perennial ryegrass (L. perenne L.). Generally, roots of Italian ryegrass fluoresce under ultraviolet light, while those of perennial ryegrass do not fluoresce, but the trait has readily introgressed from Italian to perennial. Breeders document fluorescence levels of new ryegrass cultivars before they enter seed certification programs. The objective of this study was to ascertain if there was genetic change for the expression of SRF during generations of seed multiplication. Four ryegrass populations, constructed to have low, medium, and high SRF levels, were increased independently for three generations in the field at each of three Oregon locations (Aurora, Corvallis, and Madras). The SRF was measured on the initial population parents, and for each generation cycle at each location. There were significant differences in SRF among locations within populations and for seed production generation within locations. One population initially at 11% SRF increased to 36% across the three generations of seed multiplication at Corvallis, but decreased to 8 and 2% at the other two locations. The other three populations responded differently, showing large population X location and population X generation interactions for SRF expression. Location of increase and the seed production generation must be examined and carefully considered when describing fluorescence levels of cultivars for seed certification purposes. The large amount of variation associated with environmental influences indicates SRF is not a reliable characteristic to describe and predict ryegrass cultivar genetic purity." |
|---|
| Language: | English |
|---|
| References: | 24 |
|---|
| Note: | Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Floyd, D. J., and R. E. Barker. 2002. Change of ryegrass seedling root fluorescence expression during three generations of seed increase. Crop Sci. 42(3):p. 905-911. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=79906 |
| If there are problems with this record, send us feedback about record 79906. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/42/3/905
Last checked: 05/05/2017
Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/3/905
Last checked: 05/05/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
